Slay the Spire 2 Wiki

Card

Double Energy

Double your Energy. Exhaust.

Double Energy is an uncommon Defect skill costing 1 Energy that doubles your current Energy pool and then Exhausts. This multiplicative effect can generate enormous Energy when combined with other Energy-gain cards, enabling game-winning turns where you play 4-5 expensive cards in a single turn.

Double Energy is devastating with TURBO, which adds 2 Energy before doubling. Fusion's Plasma Orb provides Energy that gets doubled, and Meteor Strike becomes castable when Double Energy is available. Tempest converts the doubled Energy into a flood of Lightning, and Multi-Cast uses the Energy for repeated Orb Evokes.

For the Defect, Double Energy is a high-priority card for any build that wants to make explosive plays. Against bosses like Doormaker and Knowledge Demon, a Double Energy turn can fund multiple game-changing cards. Against The Insatiable, the burst Energy enables massive Multi-Cast or Quadcast plays. Play all Energy-generating effects before Double Energy to maximize the doubling, and use the Exhaust as free deck thinning.

Details

Card TypeSkill
Cost1
RarityUncommon
TargetSelf
Effect TextDouble Your Energy. Exhaust.

Character

NoindexNo
In GameConfirmed

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Quick Facts

Type
Card
Confidence
High
Verified
Mar 12, 2026